<template>
  <div class="list" ref='wrapper'>
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
              <div class="button">{{this.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list" >
          <div class="button-wrapper" v-for='item of hot' :key="item.id">
              <div class="button" @click = "handleCityClcik(item.name)">{{item.name}}</div>
          </div>
        </div>
      </div>

    <div class="area" v-for="(item,key) of cities" :key="key" :ref ="key">
      <div class="title border-topbottom">{{key}}</div>
      <div class="Item_list" v-for='InnerItem of item' :key="InnerItem.id">
        <div class="item border-bottom"  @click = "handleCityClcik(InnerItem.name)">{{InnerItem.name}}</div>
      </div>
    </div>

  </div>
 </div>
</template>

<script>
import BScroll from 'better-scroll'
import { mapState } from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  methods: {
    handleCityClcik (city) {
      this.$store.dispatch('changeCity', city)
      this.$router.push('/')
    }
  },
  computed: {
    ...mapState(['city'])
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper)
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>
 <style lang="stylus" scoped>
 @import '~styles/varibies.styl'
  .border-topbottom
    &:before
      border-color #ccc
    &:after
      border-after #ccc
  .border-bottom
    &:before
      border-color #ccc
  .list
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    overflow hidden
    .title
      line-height .54rem
      font-size .26rem
      background-color #eee
      color #666
      padding-left .2rem
    .button-list
      padding .1rem .6rem .1rem .1rem
      overflow hidden
      .button-wrapper
        width 33.33%
        float left
        .button
          margin .1rem
          padding .1rem 0
          text-align center
          border .02rem solid #cccccc
          border-radius 0.06rem
    .Item_list
      .item
        line-height .86rem
        color #666
        padding-left .2rem
        margin-right .4rem
 </style>
